doc: typeset short command-line options as literal

diff --git a/Documentation/git-commit-tree.txt b/Documentation/git-commit-tree.txt
index 48c33d7ed7323c7fc4776ffeb98aad9b41b23744..ff130250bea38e487ae4a57ad849059143865ddd 100644 (file)
--- a/Documentation/git-commit-tree.txt
+++ b/Documentation/git-commit-tree.txt
@@ -44,7 +44,7 @@ OPTIONS
        An existing tree object
 
 -p <parent>::
-       Each '-p' indicates the id of a parent commit object.
+       Each `-p` indicates the id of a parent commit object.
 
 -m <message>::
        A paragraph in the commit log message. This can be given more than